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  <h1 class="topictitle1">Initializing and Terminating the Library</h1>
 
  
  <div>
	 <p>Intel&reg; Threading Building Blocks (Intel&reg; TBB) 2.2 and later automatically initializes the 
        task scheduler. You can use class 
		<samp class="codeph">task_scheduler_init</samp> to explicitly initialize the task
		scheduler, which can be useful for doing any of the following:
	 </p>
 
	 <ul type="disc">
		<li>
		  <p>Control when the task scheduler is constructed and destroyed.
		  </p>

		</li>

		<li>
		  <p>Specify the number of threads used by the task scheduler.
		  </p>

		</li>

		<li>
		  <p>Specify the stack size for worker threads.
		  </p>

		</li>

	 </ul>

  </div>

  
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong>&nbsp;<a href="../tbb_userguide/Parallelizing_Simple_Loops.htm">Parallelizing Simple Loops</a></div>
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<div class="See Also">
<h2>See Also</h2>
<div class="linklist">
<div><a href="../reference/task_scheduler/task_scheduler_init_cls.htm#task_scheduler_init_cls">task_scheduler_init Class
		  </a></div></div>
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